[Public WebGL] How to check for WebGL support
Thu May 19 12:04:32 PDT 2011
In this respect, the only thing I'm really concerned about is the apps that want to fall back to Canvas 2D if WebGL is not available (Angry Birds, Three.js, etc).
If doing 2D with a software OpenGL renderer is going to be slower than using Canvas2D (because, say, Canvas2D implements more stuff in C++) then it's legitimate to want to know and prefer Canvas 2D.
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So I know suspect some browsers are planning to fallback to software rendering if a user's card is blacklisted.
In that case you'll almost never fail and isWebGLAvailable will be useless.
I'm sure some will be upset that software rendering is slow and they'd like to know if they are going
to get software rendering beforehand but in reality lots of GPUs are slow, some are even slower than
a good software renderer so knowing that you have hardware or software is not going to help you know
if your app will run reasonably.
The only way to know is to try it.
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